Original Document not traceable at LICHFL.

I have taken a Home Loan from LICHFL & that time I submitted the original documents for which I have an acknowledgement copy. Now I have paid the Loan in the Month of Feb’12 & asking for the Original documents from their Thane Branch. After several follow up on phones & personnel visits to Thane Branch till date I have not received the one of the Original Document not any positive reply. For which I have submitted the written complain to their Area Manager, Thane Branch but still no update. I have searched New Property for relocate but due to missing of document, I unable to sell my property.